Hydraulic Shift Transmission, 1948 and 1950 Desoto Fluid drive

[Indian 101]

I have been offered a hydraulic shift transmission from a 1948 Desoto Coupe to replace my Hydraulic shift transmission in my 1950 Desoto Custom 4 door. I guess the 1948 transmission has external E-brakes (mine has internal two shoe E-brake)? Will the 1948 transmission fit my 1950 Desoto, are there other differences than the E-brake? I hope someone can help me with this question.

[D Yaros]

You might try asking your question in the DeSoto forum -

 

http://forums.aaca.org/forum/48-desoto/

[Spinneyhill]

Hollander 1952 only gives one listing for '47-'51 DeSoto with Underdrive. They are the same but there were different cases used. Yours (1950) should be case 1137365. The '48 could be 1137365 after engine no. 116876, but a different one for engine nos. before that.

[c49er]

The 1948 deSoto uses an M-5 transmission..... completely different than your 1950 M-6 transmission.

Externally/ dimensionally and electrically different.

Two pics of the early M-5 and a pic of later styles of 1950 M-6 transmissions external and internal E-Brakes.

[Indian 101]

Thank you, descriptive pictures :-). I realize your advice is to look for a newer transmission, maybe 1949-1952 will fit?

 

 

 

47/5000

 

[Rusty_OToole]

Do internal parts interchange?

[c49er]

Some of the internal gears interchange. The oil pump design is different between 1946-48 and 1949-53 transmissions. That is the reason for some internal parts interchange issues.